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Математическое моделирование процесса формирования покрытий при сверхзвуковом газопламенном напылении

Математическое моделирование процесса формирования покрытий при сверхзвуковом газопламенном напылении

Abstract

Peculiarities of numerical simulation of processes of forming the metallic coatings by the supersonic gas-flame spraying are considered. Collisions of a single particle moving at a velocity of 500-1000 m/c with a barrier are numerically studied. A model of ideal elastic-plastic medium is used for description of the interaction process. The analysis of dynamics of impact interaction of particles with the barrier and creation of caverns in it is performed. It is shown that under deforming the particle takes a disc-shape form with the complex cross section. The picture of change of the particle's form, depth of its penetration into the barrier and height of the deformed particle above the barrier surface is obtained. Refs. 5. Figs. 4. Tabs. 2.

Рассмотрены особенности численного моделирования процессов формирования металлических покрытий при сверхзвуковом газопламенном напылении. Проведено численное исследование соударения с преградой одиночной частицы, движущейся в диапазоне скоростей 500... 1000 м/с. Для описания процесса взаимодействия использована модель идеальной упругопластической среды. Выполнен анализ динамики ударного взаимодействия частиц с преградой и формирования в ней каверн. Показано, что в процессе деформирования частица принимает дискообразную форму со сложным поперечным сечением. Получена картина изменения формы частицы, глубины ее внедрения в преграду и высоты деформированной частицы над поверхностью преграды.

Keywords

ГАЗОПЛАМЕННОЕ НАПЫЛЕНИЕ, МЕТАЛЛИЧЕСКОЕ ПОКРЫТИЕ, МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold